Kerala Plus One Botany Chapter Wise Previous Questions Chapter 1 Biological Classification
Question 1.
By observing the relationship of the first pair, fill in the blanks in second one. (MARCH-2010)
Ascomycetes: Saccharomyces and Penicillium
Basidiomycetes: …………..
and …………..
Answer:
Agaricus and puccinia
Question 2.
Observe the relationship between the word of the first sentence and fill the second one. (SAY-2010)
Archaebacteria growing in salty areas – Halophils
Archaebacteria growing bin hot springs – …………..
Answer:
Thermophiles/Thermoacidophiles
Question 3.
Plants with haplontic life cycle include dominant gametophyte while in diplontic life cycle sporophyte is the dominant phase. Name the type of cycle that is intermediate between the two. (SAY-2010)
Answer:
Haplo-diplontic
Question 4.
Fill up the second party by observing the relationship of the first party. (MARCH-2011)
a) Monera – Prokaryote
Protista: ……….
b) Bacteria live in extreme salty areas – halophiles
Bacteria live in marshy areas – …………..
Answer:
a) Eukaryote
b) Methanogens
Question 5.
Fill in the blanks: (SAY-2011)
a) Fusion of protoplasm is called plasmogamy Fusion of 2 nuclei is called ………….
b) Nuclear membrane is present in Plantae Nuclear membrane is absent in ………….
Answer:
a) karyogamy
b) Monera
Question 6.
‘Diatoms, the chief producers in the oceans, are useful to us even after their death’. Evaluate the statement. (MARCH-2012)
Answer:
The cell wall deposits are called diatomaceous earth used in polishing and filtration of oils or syrups
Question 7.
Based on the relationship fill in the blanks. (SAY-2012)
Euglena: Protista
Mycoplasma: …………
Answer:
Monera
Question 8.
Suggest the correct scientific term for the following: Algal partner in lichens. (SAY-2012)
Answer:
Phycobiont
Question 9.
Botany teacher brought a diseased plant in the class¬room. Manjo identified the pathogen as a virus. Can you list any two symptoms of diseases, that helped him to identify the pathogen? (MARCH-2013)
Answer:
Mosaic formation
Vein clearing
Question 10.
Observe the relationship between the first pair and fill up the blanks using appropriate terms: (SAY-2013)
a) Carious Linnaeus – Five kingdom classification
R.H. Whittaker – ……………
b) Thermoadidophiles – Extreme heat
Halophiles – …………..
Answer:
a) R H Whittaker
b) Salt conditions
Question 11.
Identify the statement which is applicable to cyanobacteria. (MARCH-2014)
a) Important decomposers
b) Form blooms in polluted water
c) Presence of prominent nucleus
d) Completely lack of a cell wall
Answer:
Forms blooms in polluted water
Question 12.
Name one word for the following: (SAY-2014)
a) Symbiotic association of algae and fungi.
b) Viruses that attack bacteria
Answer:
a) Lichen
b) Bacteriophage
Question 13.
The symbiotic association of fungi with roots of higher plants is called mycorrhizae. Flow is a mycorrhizal association helpful to plants? (SAY-2014)
Answer:
The mycorrhizal association helps to absorb water minerals from the soil.
It also increases the surface area for the absorption
Question 14.
The class of fungi known as imperfect fungi is (MARCH-2015)
a) Ascomycetes
b) Phycomycetes
c) Deuteromycetes
d) Basidiomycetes
Answer:
c) Deuteromycetes
Question 15.
Observe the relationship between the first pair and fill in the blanks using appropriate terms. (SAY-2015)
Bacillus Bacteria – Rod-shaped
Coccus Bacteria – ……….
Answer:
Sherical
Question 16.
The name ‘Virus’ that means venom or poisonous fluid was given by …………. (MARCH-2016)
a) Pasteur
b) Ivanowsky
c) Beijerinck
d) Stanley
Answer:
Pasteur
Question 17.
Cell wall deposits of diatoms are called diatomaceous earth. Write any two uses of it. (SAY-2016)
Answer:
It is used in polishing.
It is used in filtration of oils and syrups
Question 18.
Read the following statements and select the correct statements from the given choices. (MARCH-2017)
i) Methanogens are present in the guts of ruminant animals.
ii) Mycoplasma has a distinct cell wall.
iii) Viroids are infectious naked DNA molecules.
iv) Algal component of lichen is phycobiont.
a) (ii) & (iii) b) (i) & (iv) c) (i) & (iii) d) (ii) & (iv)
Answer:
b) i) methanogens are present in the gut of ruminate animals
iv) algal component of lichen is phycobiont